Nozzle



Allg. 15, 1933 l c. c, ARMSTRONG 1,922,519

NOZZLE Filed Dec. 24, 1931 lill/111111111111111' Il,

gmx/whoa Patented Aug. 15, 1933 UNITED STATES PATENT OFFICE NOZZLEporation of Illinois Application December 2.4, 1931 Serial No. 583,035

11 Claims.

hose nozzles. An object of my invention is to produce a nozzle in suchmanner that water pressure therein is utilized to effect a positivewater-seal between the nozzles-stem and the enclosing shell.

Another object is to construct a nozzle so that water pressure thereinin any adjustment of the parts can be used to act upon a compressiblegasket to force the same into intimate contact with the peripheralsurface of the nozzle-stem in direct proportion to the pressure existentin said nozzle.

Another object is to provide a nozzle two parts or portions of whichenclose between them a compressible gasket abutting the nozzle stem, oneoi said parts being` adapted to shift with respect to the other underpressure of water whereby to deform or strain the gasket laterally andthus cause its snug engagement with the stem for preventing leakage.

Another object to furnish a nozzle of drawn metal parts so made as toprovide positive and accurate adjustments by means wholly within andseparate from the outer shell or enclosureportion, the latter presentinga smooth and iinished appearance.

A further object is to construct a complete nozzle of drawn metal partswhich, while having the advantages mentioned presents a clean, smoothand symmetrical appearance outwardly, and, further, the elimination froman `adjust` able nozzle of the Well known stumng-box arrangement forpreventing leakage of water between the outer shell and the nozzle-stem,substituting therefor parts which enclose between them a deformable orstrainable member, water pressure within the nozzle operating upon saidparts to force said member into intimate contact with the nozzle stem asthe leak-preventing means. l y

In the appended drawing my invention appears in an illustrative form, itbeing understood that such changes may be made as may lie within thespirit of the invention.

Figure l is a side elevation of the nozzle in one of the forms in whichit may be produced, said gure illustrating the size of the article asmade for domestic use.

Figure 2 is a longitudinal section of produced on a larger scale.

Figure 3 is a similar illustration except that part of an outer shellportion is partly cylindrical in form as compared with that in Figurethe nozzle This invention relates to nozzles, such as 2, and anozzle-stem has been shown in elevation, and

Figure 4 is a transverse sectional view of the' nozzle taken on line 4-4of both Figures 2 and 3.

A nozzle whose main portions are constructed or stamped or drawn metalis desirable because oi lightness in weight and the low cost ofmateriais and labor in its production as compared with bulk metal andmachining, and, in the present instance, a nozzle that, coupled with avery sturdy structure and accurate adjustment, besides being proofagainst leakage, as will be pointed out herein, makes such a type doublydesirable especially where a clean and smooth appearance is presented.

The nozzle-stem denoted at lis necessarily of cylindrical form and isproduced by means of` suitable dies by Well known operations. At one endit has the customary base 2 for attachment to a hose or other part, notshown. The opposite or forward end is tapered and provided with wateroutlets 3, there being a valve 4 mounted on that end in a conventionalmanner, it being understood, however, that this latter structure may bevaried according to desire. Said stem is provided with a screw thread 5between its ends, by the familiar rolling method, and snugly enclosingpart oi the stem is a sleeve 6 part of which is similarly furnished withthreads 7 complementary to and engaging the lthreads or" the stem. Atwhat may be termed the rear or inner end of the sleeve 6 is an outwardlyformed annular flange 8, While at the other or forward end there may bean internal annular flange which, for a purpose to be described herein,may terminate in close proximity to the stem 1, the length of the sleevebeing in this instance somewhat less than that of said stem.

An outer member or shell 10 encloses the structure thus provided, and,as shown in Figure 2, this may be tapered throughout, or as in Figure 3,it may be partially cylindrical where it surrounds the sleeve 6 and thenreduced in diameter forward of that member and can then be tapered, itbeing understood, however, that other forms are possible of use. Theforward or outer end of the shell is closed by a wall 11 wherein thedischarge orice 12 is provided to receive the named valve 4. At its rearend the sleeve has an enlargement 13, in this instance, the metal asdrawn for that purpose, creating a shoulder 14 to abut the iiange 8 ofthe sleeve 6. The enlargement terminates in an inturned annular flange15 Whose edge may lie in close relation to the stem 1, such iiange beingspaced from the said shoulder 14 and iiange 8 a surficient distance tocreate a cavity for the reception of a gasket 16. Finally, the shell mayhave one or more knurled beads 17 for convenience in adjusting thenozzle parts.

In assembling the sleeve 6 and shell 10 the former is inserted inposition within the latter whereupon the terminal flange 15 of saidshell is turned to the position described and shown. The gasket 16 may,of course, be readily inserted and it may be replaced by another, if andas required, upon separation of the shell from the nozzle-stem asassembled for-use.

iin the present forni oi my device the enlarge nient 13 is in the formoi an Octagon, by choice,

TFigures l boing o; like form to seat in the octagonal cavity ci suchenlargement, but other i'orms may, of course, be employed with the wholeobject ol lproviding a structure such as will prevent the sleeve-andshell having rotative movement relatively to each other. Or, again,other means for preserving the mentioned. relation of these parts may bepossible, as is clear. However, the polygonal form of the enlargement isquite ornamental and provides a convenient grip for the hand oi the userof the noz e as a means of adjusting l the shell with respect to thestemrl.

,17' which lies transversely of thenozzle-stem,

wits ends extending through appropriate apertures 18 in the wallsor thelatter, but one of which is shown, Figure 2, the nange 9 of the sleeve 6being adapted to abut the pin when the Ashell is moved forward to exposethe .discharge orifice 12.

"ample, the'shell when reduced in diameter, as

explained, may provide a further shoulder 19 for the abutment'of thesleeve-end thereagainst, but this may not be used as evidenced by Figure2.

VIn the practical use of the nozzle the said shell 10 is `designed topartake of a slight longitudinal movement with respect tol the steinandsleeve, as will now be brought out', and which is the important objectof the invention. That 4is to say, when the parts are adjusted to closethe discharge orice 12 the water pressure within the nozzle ltends toshift the shell 10 forward ly with the result that the gasket 16 will becompressed between the flanges 15 and 8 and thereby, since reduced inthickness, its bulk must be extended inthe direction of its own planeand since it is prevented enlarging in diameter by the cuter wall ofthe-enlargement 13 it must be closed upon the periphery of the stem,hugging the same throughout its circumference and posi1 tivelypreventing leakage of water at that location. When the oriiice 12 isentirely closed the pressure upon the gasket is naturally greatest W andtherefore the compression of that member and 4, the ange 8 of the sleeve6 about the stem is extreme. The degreeof pressure is, or" course, indirect proportion to the water pressure, which is to say that the gasketis affected to the extent that the water is entirely imprisoned, as wellas during varying rates of discharge thereof. At a full opening of theoriiice the pressure exerted on the gasket is least while at the sametime suiiicient to seal what would otherwise be a leaking joint.

It is evident that my construction thusv provides for a nozzle all ofwhose parts, except the valve 4, can be of drawn metal of relativelylight gauge and since the sleeve is employed to have direct operativeconnection with the shell there is no defacing of the outer shell 10 forthe purpose, coupled with the very important advantage that said shellwhile still being the stream-adjusting member as heretofore, is capableof independent longitudinal movement for gasket-compression to the endthat a leak-tight joint is preserved. Such a construction also providesthat the shell 10 can be made smooth throughout its exposed surface toclosely simulate the older common types of heavy machined nozzles.

1n the interest of brevity, the sleeve 6 with its flange 8, and theshell10 with its flange l5 will be termed parts in some of the claims herein.

What is claimed:

l. A nozzle comprising a stem, a shell encircling` the stem and havingan inwardly directed Fango terminating in kclose proximity to the stern,a sleeve Within the shell and having au end lying in spaced relation tothe ange, and a gasket encircling ,the stem between the flange and theend of the sleeve, said shell being longitudinally slidable with respectto the sleeve and arranged to be moved by the pressure of the water in adirection which will compress the gasket, forcing it into intimatecontact with said stem.

2.. A nozzle comprising a threaded stem, a shell enclosing the stem andprovided near its inner Iend with an inwardly extending annular aneeapproaching the stem, a sleeve interposed between the shell and stem andthreaded to adjustably engage the thread of the latter, said sleevehaving an outwardly extending annular :flange spaced Vfrom the said angeof the shell, and a gasket encircling the stem and disposed between saidiianges said shell being slidable longitudinally with respect to thesleeve and arranged to be rnoved bythe pressure of the water in adirection which will compress the gasket between said flanges.

3. Anozzle' comprising a stem having a passage for the flow of a fluidtherethrough under pressure, a' packing surrounding said stem, a shellslidable over said stem and packing and having an outlet orifice, saidstem and said shell having means for engaging said packing to strainsaid packing when the shell is slid under the fiuid pressure effectiveon the orifice portion or said shell to eiiect a leaktight joint betweensaid stem and said shell, said shell arranged to be moved by thepressure of the fluid in a direction which will compress the packing.

4. A nozzle comprising a stem having a passage for the flow of a fluidtherethrough under pressure, a packing surrounding said stem, a shelllsurrounding said stem and packing and having means for engaging saidpacking, said stein having means for engaging the packing on theopposite side thereof from the engaging means of the shell, said shellhaving an outlet orifice and being slidable over said stem and packingunder the iluid pressure acting against the orifice end of said shell tocause said engaging means to strain said packing to prevent leakagebetween said stem and shell.

5. A nozzle comprising a stem having a passage for the flow of a fluidtherethrough under pressure, a packing surrounding said stem, anadjustment means surrounding and adjustably engaging said stem, a shellsurrounding and slidable over said adjustment means and said packing andhaving an outlet orifice, said shell and said adjustment means havingengaging means for said packing for straining said packing when saidshell is slid under the uid pressure effective against the orificeportion of said shell, the latter arranged to be moved by fluid pressurein a direction which will compress the packing to effect a leak-tightjoint between said stem and said shell.

6. A nozzle comprising a stem having a passage for the flow of a iiuidtherethrough under pressure, a packing surrounding said stem, anadjustment means surrounding and 'adjust-ably engaging said stem, ashell surrounding and slidable over said packing and said adjustmentmeans and having an outlet orifice at an end thereof, means at the otherend of the shell for engaging said packing, means on said adjustmentmeans for engaging the packing opposite from the engagement means ofsaid shell, said engagement means arranged to act on said packing toeiect a leak-tight joint between said stem and said shell in a slidingmovement of said shell, the latter arranged to be moved by iiuidpressure acting on the outlet end portion of said shell to compress saidpacking.

7. A nozzle comprising a tubular stem having a threaded portion, atubular sleeve surrounding said stem and threaded to said threadedportion of said stem and having a ange at an end thereof, a tubularshell surrounding and slidable over said sleeve and having a flange atan end thereof and an outlet orice at the other end thereof, a packingbetween said flanges and surrounding said stem and strainable to form aleak-tight joint between said stem and shell upon the sliding of saidshell under the uid pressure acting against the orifice end portion ofsaid shell, said shell arranged to be moved by pressure of the Iluid tocompress the packing.

8. A nozzle comprising a stem having a passage Vtherethrough for theflow of a iiuid under pressure, a member threaded to said stem, a shellencircling said member and stem and having a Ilange and a dischargeopening, packing interposed between said ange and an abutment integralwith said member, and an operative connection between said shell andmember permitting rotation of said shell and member in unison about saidstem and longitudinal movement with respect to each other to compresssaid packing.

9. A nozzle comprising a stem having a passage therethrough for the flowof a uid under pressure, a sleeve threaded to and rotatable on said stemand having a radially extending abutment, a shell encircling said sleeveand stem and having a radially inturned abutment and a dischargeopening, packing interposed between said abutments, and an operativeconnection between said shell and sleeve permitting rotation of saidshell and sleeve in unison about said stem and longitudinal movementwith respect to each other.

10. A nozzle comprising a stem having a passage therethrough for the owof a uid under pressure, a sleeve threaded to and rotatable on said stemand having a radially extending abutment, a shell encircling said sleeveand stem and having a radially inturned abutment and a dischargeopening, a valve carried by said stem .in operative relation to saiddischarge opening, packing disposed about said stem and arranged betweensaid abutments, and an operative connection between said shell andsleeve permitting rotation of said parts in unison about said stem andlongitudinal movement with respect to each other.

l1. A nozzle including in its construction a stem having a passagetherethrough for the flow of a Iluid under pressure, a member threadedto said stem, an outer shell encircling said member and stem, said shellhaving a discharge opening at one end, the member and shell havingoperative connection permitting both to be rotated in unison about thestem, and a packing-ring encircling the stem abutting at one side thesaid member, the said shell carrying an abutment portion abutting theother side of said packingring, said connection being arranged to permitlongitudinal movement between said shell and member.

CHARLES C. ARMSTRONG.

